Datasheet > AH477-P4A-A

AH477-P4A-A

更新时间： 2024-09-13 03:21:39

品牌	Logo	应用领域
美台 - DIODES		/
页数	文件大小	规格书
5页	209K
描述
Analog Circuit, 1 Func, SIP-4

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数据手册

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AH477-P4A-A 数据手册

Not Recommended for New Design

AH477

Single Phase Hall Effect Latch

Features

General Description

AH477 is the integrated Hall sensor with output

drivers designed for electrical commutation of

brush-less DC motor application. The devices are

included as follows: on-chip Hall voltage generator

for magnetic sensing; the error amplifier that

amplifies the Hall voltage; a comparator is to

provide switching hysteresis for noise rejection; the

bi-direction drivers for sinking and driving large

current load. Internal bandgap regulator is used to

provide temperature compensated bias for internal

circuits and allows a wide operating supply voltage

range.

-On-chip Hall sensor

-Bi-direction H type output drivers for single coil

-Internal bandgap regulator allows temperature

compensated operations and a wide operating

voltage range

-High output sourcing/sinking capability up to

300mA

-Operating voltage: 3.5V~20V

-Low output switching current noise

-SIP-4L package for AH477

Applications

If a magnetic flux density larger than threshold Bop,

DO is turned to sink and DOB is turned to drive.

The output state is held until a magnetic flux density

reversal falls below Brp causing DO to be turned to

drive and DOB turned to sink.

-Single-coil Brush-less DC Fan

-Single-coil Brush-less DC Motor

AH477 is rated for operation over-temperature

range from -20 ^oC to 85 ^oC and voltage range from

3.5V to 20V. The devices are available in low cost

die forms or rugged SIP-4

Pin Descriptions

SIP-4L(AH477)

Pin Configuration

Front View

Name

Vcc

P/I/O Pin #

Description

Positive Power Supply

Output Pin

AH477

DOB

Vss

Output Pin

Ground

1 2 3 4

SIP-4L

This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of

this product. No rights under any patent accompany the sale of the product.

Rev.1.0 Dec 13, 2005

1/5

12 3 4 5

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